Shingle roof structure



Sept-28, 1937. M. P. PHELAN 2,094,188

SHINGLE ROOF STRUCTURE Filed Sept. 18, 19:56

Patented Sept. 28, 1937 UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to a shingle roof structure wherein the shingle elements are formed of a composition of asbestos and cement.

In applying composition shingles made of asbestos and cement by one method in building a 5 roof, said shingles are laid in rows in staggered relation with the lower ends of the shingles of one row overlying the upper ends of the shingles in the row next below. In addition the shingles in the same row are side lapped.

When a roof is constructed with the composition shingles as specified the faces of the shingles become discolored so as to appear dirty or sooty. This discolorization initially appears on the shingles of each row at the lower ends of the shingles of the rows next above and then progressively advances over the faces of the shingles. As this discolorization is not removable by ordinary rain washings the surface of the entire roof soon takes on an objectionable and unsightly appearance. It is therefore the purpose of my present invention to introduce into the aforesaid roof structure means for preventing the formation of this discolorization of the shingle faces and to this end I introduce between adjacent rows of the shingles strips of non-corrosive metal, such as copper, with a portion of said strips extending beneath the lower ends of the shingles of one row and the remainder of the strips extending beyond said lower ends and overlying a limited area of the outer faces of shingles in the row next below. I have discovered by actual test over a long period that the presence of such metal strips in the locations specified will prevent the initial and subsequent discoloration of the shingles and maintain a clean and sightly appearance of the roof. I am unable to state with certainty the reason for the function of the metallic strips as established by my tests, but it is possibly due to some chemical action between the metal of the strips and the discoloring deposit.

In the drawing chosen to illustrate my invention the scope whereof is set forth in the appended claims:

Figure 1 is a plan view of a fragment of an asbestos shingle roof structure having my invention embodied therein.

Figure 2, an enlarged section on the line 2--2 of Figure 1; and

Figure 3, a detail perspective View showing the manner of associating the non-corrosive metal strip with its hangers.

Referring to the drawing the roof structure is shown as embodying roof rafters l0 supporting the usual sheathing ll covered in this instance with the felt layer I2. Disposed on the felt layer 12 are asbestos shingles arranged in rows, the shingles of the upper row being indicated at l3, and those of succeeding rows being indicated at M and I5 respectively. It will be apparent from the drawing that the shingles of each row are side lapped and that the lower ends of the shingles of each row overlie the upper ends of the shingles in the row next below. The shingles l3, l4 and 55 all are secured to the sheathing l l in the usual way. In addition adjacent shingles in each row are connected together in the area of their side overlap by storm nails 16 in a manner well known to those skilled in the art.

In incorporating my invention in the structure heretofore described I position a non-corrosive thin metallic strip H, such as copper, so that a portion of the strip lies between the lower and upper ends of the shingles l3 and I4, while the remainder of the strip projects beyond the lower edge of the shingles I3 and overlies a portion of the area of the outer face of the shingles H. To secure the strip in this position I provide hanger members l8 of the same material as the strip. These hanger members I8 are engaged at their inner ends on the storm nails l6 which connect the shingles l 3, while their outer ends extend under the strip I! and are then bent back upon the top face of the strip to form a supporting hook for the latter. Another strip I9 is shown similarly positioned and held with respect to the rows of shingles l4 and I5 and in like manner non-corrosive metallic strips are applied throughout the complete roof structure.

While I have shown one particular form of carrying my invention into practice it will be understood that the same is susceptible to changes to meet the particular shape of the shingles being laid, the essential being to position the noncorrosive strip over the areas of the various shingles which are initially subject to discoloration. In addition, if desired the heads of the storm nails It should be enlarged and shaped so that they could be utilized as hanger members for the strips in lieu of the separate members I8.

I claim:

In a, shingle roof structure, asbestos shingles arranged in rows extending transverse the direction of roof incline, the shingles of each row having side overlap and the lower ends of the shingles of each row extending over the upper ends of the shingles of the row next below, non-corrosive metallic strips positioned between the overlying portions of the shingles of adjacent rows and extending over a limited area of the exposed 55 lated first named strip and having its free end returned upon the upper face of the related first named strip to provide a hanger for the latter whereby the storm nails serve both as a connection between adjacent shingles of each row and. 5

a support for the first named strip through said hanger.

MICHAEL P. PHELAN. 

